JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Wei Zhao,Yifan Song,Zhen Song,Jiaxin Li,Yuanjing Zhang,Wenxia Zhao,Huaijun Chen,Yangyang An,Ziyan Wang,Siyu Ma,Haoxian Li,Wenzhuo Ma,Kaihong Hui
Polycarbonate-acrylonitrile-butadiene-styrene (PC-ABS) has been treated with an aqueous solution of N -methylpyrrolidone (NMP) and ethanol (C 2 H 5 OH) under conditions that achieve a controlled level of polymer swelling. In addition, the micro-etching effect of alkaline potassium permanganate on PC-ABS was investigated using a low environmental impact binary micro-etching system. The effect of NaOH concentration, etching time, and temperature on surface roughness, morphology, wettability, and PC-ABS adhesion strength has been examined. The PC-ABS surface characteristics were analyzed using field emission scanning electron microscopy (SEM), atomic force microscopy (AFM), Fourier transform-infrared (FT-IR) spectroscopy, and X-ray photoelectron spectroscopy (XPS). The results have demonstrated that the surface morphology was altered after micro-etching, with an increase in surface roughness ( R a ) from 9.69 to 316 nm. In addition, the contact angle decreased from 92.2° to 30.1°, and the adhesion strength increased to 0.88 kN/m. The findings of this study have established an effective micro-etching process using alkaline potassium permanganate that enhances the wettability, surface roughness, and adhesion strength of the PC-ABS copolymer.
研究领域:
材料科学
·
表面工程
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2024
·Vol. 16
·期 2
·275
·
IF 4.7
Shaojun Chen,Youhan Zeng,Weifeng Bi,Haitao Zhuo,Haiqiang Zhong
The flame-retardancy of polymeric materials has garnered great interest. Most of the flame retardants used in copolymers are functionalized additives, which can deteriorate the intrinsic properties of these materials. As a new type of flame retardant, functionalized metal–organic frameworks (MOFs) can be used in surface coatings of polymers. To reduce the flammability, a mixture of phytic acid, multi-wall carbon nanotubes, zirconium-based MOFs, and UiO-66 was coated on a PC/ABS substrate. The structure of the UiO-66-based flame retardant was established by FT-IR, XRD, XPS, and SEM. The flammable properties of coated PC/ABS materials were assessed by LOI, a vertical combustion test, TGA, CCT, and Raman spectroscopy. The presence of a UiO-66-based coating on the PC/ABS surface resulted in a good flame-retardant performance. Heat release and smoke generation were significantly reduced. Importantly, the structure and mechanical properties of PC/ABS were less impacted by the presence of the flame-retardant coating. Hence, this work presents a new strategy for the development of high-performance PC/ABC materials with both excellent flame-retardancy and good mechanical properties.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMER
·
2025
·
IF 4.5
Bangdong Ge,Zongsheng Liu,Yi Zheng,Shiyang Zhu,Meng Ma,Si Chen,Yanqin Shi,Huiwen He,Yulu Zhu,Xu Wang
PC/ABS (polycarbonate/acrylonitrile-butadiene-styrene) alloy has poor mechanical properties due to its poor compatibility and weak interfacial adhesion, which limits its application range. Therefore, it is necessary to compatibilize and modify the PC/ABS alloy to improve the compatibility and enhance the interfacial adhesion of the two phases. Reactive compatibilizers are frequently utilized to enhance the compatibility of incompatible polymer blends. However, traditional reactive compatibilizers often form graft copolymers with asymmetric molecular structure during melt blending, which frequently "migrate in" and "migrate out" under the influence of shear force, leading to a decrease in the compatibilization efficiency of compatibilizers. In this work, ethylene-maleic anhydride alternating copolymer (ZeMac) with more reactive sites was used as a reactive compatibilizer, and amino-terminated polystyrene (PS–NH 2 ) with good compatibility with ABS was synthesized via free radical polymerization. Combined with the difference of affinity between PC, ABS and ZeMac, and the difference of reactivity between PC, PS-NH 2 and ZeMac, a double-comb compatibilizer was constructed in-situ at the interface of the two phases by changing the blending sequence of raw materials in the melt blending process. Firstly, PC was blended with ZeMac, and then blended with ABS and PS-NH 2 to prepare (PC/ZeMac-1)/(ABS/PS-NH 2 -1) alloy with excellent comprehensive properties. Compared with PC/ABS alloy, the notched impact strength of (PC/ZeMac-1)/(ABS/PS-NH 2 -1) alloy increased from 62.0 kJ/m 2 to 90.2 kJ/m 2 , increased by 45 %. It can be seen from the microstructure of the cyclic tensile section that the debonding phenomenon of the PC/ABS alloy interface gradually weakened with the addition of ZeMac and PS-NH 2 , which proved that the compatibility of PC and ABS phases was improved. This study provides a certain reference value for the design of high-efficiency compatibilizers and the preparation of high-performance composites.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 23
·e55478
·
IF 2.7
Wei Zhao,Wenxia Zhao,Xinwei Li,Xin Liu,Kaihong Hui,Yifan Song,Huaijun Chen,Yubo Cui,Qian Zhu,Jing Liu,Liang Qiao,Yani Yan
In the present study, the low pollution acidic potassium permanganate system has been used in the study of its micro-etching effect on polycarbonate-acrylonitrile butadiene styrene (PC-ABS). Prior to micro-etching using a N methyl pyrrolidone (NMP)-glycol butyl ether solution was used as the swelling system of PC-ABS. Reasonable swelling conditions were determined, a 2-min expansion period at a temperature of 35°C with an NMP concentration of 80%. After the swelling processes, the effects of the volume ratio of V H 2 O : V H 2 S O 4 , micro-etching temperature, and micro-etching duration on the PC-ABS surface morphology, surface roughness, surface hydrophilicity, and peel strength, have been investigated. It was finally determined that the best micro-etching effect could be obtained by reacting at V H 2 O : V H 2 S O 4 = 1:2 and a temperature of 60°C for 25 min. The surface of the PC-ABS copolymers was characterized by x-ray photoelectron spectroscopy, atomic force microscopy, and Fourier-transform infrared spectroscopy. The results showed that the micro-etching process changed the morphology of the PC-ABS surface and generated cavities. In addition, the surface roughness increased from the initial R a = 9.69 to R a = 197 nm. Also, the water contact angle on the PC-ABS surface decreased from 92.2° to 28.6°, and the peel strength increased to 0.98 kN/m.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2023
·
IF 8.7
Jingfan Zhang,Yifang Hua,Jian Liu,Tao Zhu,Jun Sun,Xiaoyu Gu,Hongfei Li,Jingmao Zhao,Sheng Zhang
Organic-inorganic hybrid particles have been prepared by grafting styrene maleic anhydride copolymer (SMA) onto reactive amino-modified silica nanoparticles. The SMA modified SiO 2 (SMA-SiO 2 ) was incorporated into polycarbonate (PC)/acrylonitrile-butadiene-styrene (ABS) composites (4:1, wt%/wt%) with bisphenol A bis (diphenyl phosphate) (BDP) to simultaneously improve the mechanical properties and flame retardancy. The mechanical properties of the sample containing SMA-SiO 2 are apparently improved compared with that of samples containing unmodified SiO 2 . It is found that SMA-SiO 2 tends to distribute at the phase interface of PC/ABS, and therefore improves the compatibility between PC and ABS . Besides, the peak of heat release rate (PHRR) and the total smoke production (TSP) of the PC/ABS composites are decreased by the presence of SMA-SiO 2 . It is suggested that SMA-SiO 2 can form a flame retarding shell at the phase interface to protect ABS. In summary, both the mechanical properties and flame retardancy of PC/ABS composites are significantly improved due to the selective distribution of SMA-SiO 2 .
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
FIRE AND MATERIALS
·
2019
·Vol. 43
·期 6
·685-693
·
IF 1.173
Wenpeng Song,Wang Zhang,Yonggang Li,Huijuan Ma,Tao Lin,Cuifen Lu,Junqi Nie,Guichun Yang,Zuxing Chen
Summary Two kinds of novel silicon-phosphorus linear polymers were synthesized by the hydrosilylation reaction of double-decker-shaped silsesquioxane (DDSQ) and 9,10-dihydro-9-oxa-10- phosphaphenanthrene-10-oxide (DOPO) derivatives and characterized using 1 H NMR, 31 P NMR, and 29 Si NMR. Flame-retardant polycarbonate/acrylonitric-butadiene-styrene (PC/ABS) blends were prepared with different contents of silicon-phosphorus linear polymers. The flame-retardant properties of silicon-phosphorus linear polymers as well as the morphology were investigated in detail by using thermogravimetric analysis (TGA), limiting oxygen index (LOI), (Underwriters Laboratory) UL-94, microscale combustion calorimetry (MCC), and scanning electron microscopy (SEM), respectively. The silicon-phosphorus linear polymers containing DDSQ and DOPO units can synergistically improve the flame retardancy and thermal stability of PC/ABS blends. Flame-retardant polymers with different linkers between DDSQ and phosphate units show comparable effect on the flame retardancy of PC/ABS.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
FIRE AND MATERIALS
·
2018
·Vol. 42
·期 8
·946-957
·
IF 1.22
Zhang Wang,Li Yonggang,Ma Huijuan,Song Wenpeng,Lin Tao,Lu Cuifen,Nie Junqi,Yang Guichun,Chen Zuxing
Summary Two novel phosphorus-nitrogen-silicon copolymers (DDSQ-N-P-yne and DDSQ-N-P-ene) were synthesized by hydrosilylation reaction with DDSQ and DOPO derivatives. DOPO derivatives with different end groups were designed and synthesized to compare the flame retardancy and compatibility of phosphorus-nitrogen-silicon copolymers by different linkers between DDSQ and DOPO derivatives. The synthesized copolymers have been evidenced by 1 H, 29 Si nuclear magnetic resonance, and gel permeation chromatography and then introduced into polycarbonate (PC)/acrylonitrile butadiene styrene (ABS) alloy to study their flame retardancy and explore whether they exhibit a synergistic effect on the flame retardancy. The flame-retardant properties of DDSQ-N-P-yne (or ene) systems as well as the morphology were investigated in detail by using limiting oxygen index, thermogravimetric analysis, UL-94, microcalorimeter, energy dispersive X-ray, and scanning electron microscopy, respectively. When DDSQ-N-P-yne (or ene) content is 10 wt%, the composites of PC/ABS are identified to be very effective according to limiting oxygen index, UL-94, and microcalorimeter. The microstructures of the char were investigated by scanning electron microscopy, and the results indicated a tight and compact graphitized layer shaped, which plays an important role in improving the excellent thermal stability and flame retardancy of PC/ABS alloy.
研究领域:
材料科学
·
高分子化学
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2018
·
IF 4.439
Le Zhang,Enlin Han,Yulun Wu,Xiaodong Wang,Dezhen Wu
The surface decoration of short-cut polyimide (PI) fibers with multi-walled carbon nanotubes (MWCNTs) was performed by fabricating a polydopamine (PDA) coating layer on the fiber surface and then immobilizing MWCNTs onto the coating layer via covalent bonding. This successful surface decoration was confirmed by scanning electron microscopy, X -ray photoelectron spectroscopy, Fourier -transform infrared microscopy and static water contact angle. The application of the surface-decorated PI fibers as reinforcing fibers for reinforcement of polycarbonate (PC)/acrylonitrile–butadiene–styrene copolymer (ABS) alloy was investigated, which indicated that the MWCNTs-decorated PI fibers not only could effectively reinforce the PC/ABS alloy but also generated a significant lightweighting effect on the resulting composites. The maximum mechanical properties were achieved for the composites at a fiber content of 20 wt.% and a fiber length of 3 mm. This significant reinforcement effect is attributed to the enhancement of interaction bonding strength between the fibers and matrix as a result of the surface decoration of PI fibers with MWCNTs. The morphological investigation suggested that fiber rupture was the major energy dissipation mechanism in the tensile and impact failures, whereas fiber debonding and pullout were partly involved in the fracture energy dissipation. In addition, the presence of surface-decorated PI fibers slightly enhanced the thermal stability and load bearing capability of composites. This work can provide a type of high-performance lightweight composite material for automobile and aviation industries.
研究领域:
材料科学
·
复合材料工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）